This paper describes the field measurements and the simulation study on air-conditioning system with thermal buffer zone. Passage located on the perimeter of a building can serve as a thermal buffer zone, which diminishes the effect of exterior thermal loads. Measurements were made in underfloor air distribution system with buffer zone using air curtain and the result of the measurements was compared with that of CFD. In addition, two types of air-conditioning system with thermal buffer zone and conventional FCU system are discussed in terms of their characteristics.
